JPS61108748A - High density fabric excellent in moisture permeability and water resistance - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a high-density fabric with excellent moisture permeability and water resistance.

(Prior art) Conventionally, pure cotton high-density fabrics with a gentle texture and moisture permeability have been known as high-density fabrics, but they have poor water resistance and breathability, and synthetic fiber yarns, especially fine denier yarns, The one I used had high water resistance (1) and low breathability, which was excellent, but on the other hand, the moisture permeability was extremely poor. Although it had excellent functionality such as moisture permeability, its texture was extremely poor.

(Problems to be Solved by the Invention) An object of the present invention is to obtain a high-density fabric using synthetic fiber yarn, particularly fine denier yarn, and having excellent moisture permeability and water resistance.

C. Elaborate Means to Solve All Problems The present invention consists of a substantially nylon 46 fiber system in which more than 70 moles of repeating units consist of tetramethylene adipamide bonds, and the warp and/or weft are the fibers. The single fiber denier of the yarn is 2.0 denier or less and 0.05 denier or more, and the cover factor K is expressed by the following formula.
It is a high-density fabric with excellent moisture permeability and water resistance, with a rating of 19.5 #-44.5.

That is, the key point of the present invention is to completely weave a high-density fabric using nylon 46 fibers, which have a moisture absorption rate comparable to that of cotton, which is not found in conventional synthetic fibers. As a result, moisture permeability is close to that of conventional cotton fabrics, and a high-density fabric can be obtained that retains the water resistance properties that are the advantages of synthetic fibers.

Here, nylon 46 fiber has been proposed for use in tire cords etc. due to its other characteristic of good thermal stability (for example, Japanese Patent Application Laid-Open No. 59-88911), but it has also been proposed for use in high-density fabrics. has not been proposed or put into practice.

The present invention will be explained in more detail.

In the present invention, the reason why the repeating units are essentially nylon 46 fibers consisting of 70 or more moles of tetramethylene adipamide bonds is that fiber yarns with less than 70 moles of tetramethylene adipamide bonds have a lower moisture absorption rate and are not suitable for practical use. However, it is difficult to obtain a high-density fabric with sufficient moisture permeability. If necessary, ε-caprolactam, tetramethylene diamine, etc. can be completely copolymerized within a range of 30 mm. '1 liter,
In order to increase water resistance in the high-density fabric of the present invention,
The single fiber denier 1 of the nylon 46 fibers must be 2.0 denier or less, and the O,OS denier or more.

More preferably, it is 1.5 denier or less, and 0.1 denier or more. If the fiber denier is 2.0 denier or more, the voids between the fibers of the high-density fabric will become large, making it impossible to obtain sufficient water resistance, and if it is smaller than 7'Ho,os denier, the fiber tensile strength will decrease, which is preferable. do not have.

Such substantially nylon 46 fiber yarn can be made into a high density fabric according to conventional methods. At this time, nylon 46 fiber yarns may be arranged only in the warp or weft, and the other weft or warp may be appropriately interrupted, or nylon 46 fibers may be arranged in both the warp and the weft. Good too. However, it is more desirable to use it for both warp and weft yarns so that the dyeability of the fabric is the same.

Further, the high-density fabric of the present invention is usually treated with a water repellent treatment and subjected to a finishing process, but any known water repellent agent may be used.

C Example] The present invention will be explained by examples, but do these examples constitute the present invention?
It is not binding.

Example 1 Polytetramethylene adipate polymer chips (relative viscosity: 3.0, melting point: 290°C) were dried at 100°C under reduced pressure for 24 hours, then melt-spun and stretched under the conditions shown in Table 1. Ascending, a drawn filament yarn of 40 denier - 157 filament (single fiber denier: 0.25 denier) was obtained.The obtained ratio drawn yarn?2 yarns were combined and twisted.Then, they were used for the warp and weft to adjust the warp density and change. 153 threads/inch, weft density 1
One plain woven fabric was produced at 10 strands/inch.9. The cover factor at this time was presetting, peeling, dyeing, and water repellent finishing (Achihigard AC-7307% solution) to obtain a finished fabric.

The performance of the finished fabric is shown in Table IK2.

Comparative Example 1 Nylon 6 polymer chip (relative viscosity 3.0, melting point 226
℃) A 40 denier 157 filament nylon 6 drawn filament yarn was obtained using the same method as in the Example under the conditions shown in Table 1.

The resulting drawn yarn was processed into a woven fabric through each process under the same conditions as in the Examples and its performance is shown in Table 2.

Comparative example 2 741J465S/1 warp density 153/In +
Seven fabrics with a weft density of 110 threads/in were prepared, and Example and -1
The results are shown in Table 2.The water pressure resistance of the moisture permeable Jfij JI 5Z-0208 was measured according to JISL-1079-66.

As is clear from Table 2, the examples made of nylon 46 fibers are excellent in both moisture permeability and water resistance. On the other hand, Comparative Example 1 had good water resistance but poor moisture permeability. ′! Comparative Example 211''j had either good moisture permeability or poor water resistance.

(Effects of the Invention) The high-density fabric of the present invention is a highly dense fabric with excellent moisture permeability and water resistance, and is ideal for use in windbreakers, coats, coltswear, ski shoes x7, fishing wear, etc.

Claims (1)

[Claims] (1) 70 mol% or more of the repeating units are made of tetramethylene adipamide and bond, and the warp and/or weft is substantially composed of a nylon 46 fiber system, and the single fiber denier of the fiber yarn is 2.0 denier or less And 0.05
A high-density fabric with excellent moisture permeability and water resistance, which has a denier or more and has a cover factor K expressed by the following formula of 19.5 to 44.5. Cover factor K = (warp yarn density/√warp cotton count)
+ (Weft yarn density/√Weft cotton count)